Convert from excel date number to R Date type

Source: R/wrappers.R

Convert from excel date number to R Date type

convertToDate(x, origin = "1900-01-01", ...)

Arguments

x

A vector of integers
origin

date. Default value is for Windows Excel 2010
...

additional parameters passed to as.Date()

Details

Excel stores dates as number of days from some origin day

See also

writeData

Examples

## 2014 April 21st to 25th
convertToDate(c(41750, 41751, 41752, 41753, 41754, NA))

#> [1] "2014-04-21" "2014-04-22" "2014-04-23" "2014-04-24" "2014-04-25"
#> [6] NA          
convertToDate(c(41750.2, 41751.99, NA, 41753))

#> [1] "2014-04-21" "2014-04-22" NA           "2014-04-24"